Home / 12,678.12-19,023.66-4,889.16

Finding the Fourth Proportional to 12,678.12, 19,023.66 and 4,889.16

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Solution

The fourth proportional to 12,678.12, 19,023.66 and 4,889.16 is: 7,336.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.12 : 19,023.66 = 4,889.16 : x
  2. Step 2: Convert to fraction form
    12,678.12/19,023.66 = 4,889.16/x
  3. Step 3: Cross multiply
    12,678.12x = 19,023.66 × 4,889.16
  4. Step 4: Simplify right side
    12,678.12x = 93,009,717.53
  5. Step 5: Solve for x
    x = 93,009,717.53/12,678.12
  6. Step 6: Final answer
    x = 7,336.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.